Shakeout station



Feb. I15, 1944. Y

E. H. WHITVTAKER sHAKE-OUT STATION original Filed July 9, 1941 .2 Sheets-Sheet 1 ArroRNz-:Y's

@d E@ m. NT@ 9 N r V Feb 15,1944- E. H; WHITTAKER sHAKEv-OUT STATION original Filed July 9, 41941 2 Sheets-Sheet 2 -w\\\\ n Imn INVENTOR.

Ewarl H- WHLELREF ATTORNEYS.

rarenred ree. 15, 1944 v no sfrAras PATENT' orrlcr.

Divided land this application October 24, 1942,'Serial No. 463,230

(Cl. ,Z2-89) 7 Claims.

This invention relates to shake-out stations or apparatus for foundry plants, and this application is a division of an application for United States patent on Foundryplants, led by me July 9, 1941, Serial Number 401,651.

r)She principal object of the invention is to provide a shake-out apparatus to impart a straight up-and-down movement to horizontally-disposed flask sections so as tov dislodge molds and sand therefrom and cause the material to drop straight downwardly.

Another object is to provide an apparatus which will cause the molds to collapse and be broken up into relatively small pieces, freeing sand, so that the latter may be reconditioned and retempered for reuse.

Still another object is to provide a shake-out station provided with a roller bed for a grizzly, upon which the grizzly may be rolled, the roller bed supporting the grizzly a portion of the ltime during the shake-out and until it may be rolled off. Thus the grizzly is not actually attached to the shake-out mechanism, and may be rolled off for repairs to it or to the mechanism which 'is normally below the grizzly.

Other objects and advantages of the inventionA will appear in the following detailed description of the preferred embodiment of the invention, taken in connection with the accompanying drawings forming a part of this specification and in which drawings:

Figure 1 is a view mostly in side elevation of the novel shake-out station, with portions of a crane, and a sand reconditioning apparatus below the shake-out station.

Figure 2 i's a vertical sectional view through the shake-out station with the shaking means in one position. v

Figure 3 is a view, similar to Figure 2 but with the shaking means in another position' Figure 4 is la vertical sectional View of a valve' be keyed, as at I3, and the shafts may be carried by suitable bearings in standards of any approved design. i

There is no oor above nor directly below the rollers l l, but there may be provided spaced apart rollers I4, similar to rollers Il, with their axes paralleling the axes of the rollers l I, at either end of the roller bed I0, and between these rollers i4 at either end thereof may be floor panels I5,

The free spaces I6 between rollers ll are provided so that sand, broken castings, trash, etc., shaken from flasks above the roller bed Hl will drop through the spaces i6 between the rollers Il,

Upon the roller bed Il) may be rolled, over the rollers M, a grille or grizzly Il, comprising a perforated metallic plate (or a tray if several small castings are made in the mold), the perforations I8 permitting sand or trash to drop through the grizzly l1.

Vibrating or shaking means 2i] for the grizzly Il includes a head or grille 2l which may be quickly raised and lowered by a fluid-operated hammer 22. The head is, in the example shown, made up 'of bar and rod material 23 and 24 respectively to form a frame and a grating or grille through which sand and trash will fall readily; the bars 23 being adapted to engage the under side of the grizzly l'l during the upward strokes of the hammer 22. This head normally'extends about the upper portions of the rollers or supports Il, with the bars 23 parallel and spaced` from the ends of the rollers Il and the rods 24' extending from bar to bar and between the upper portions of the rollers Il, through the spaces I6. However, the 'head 2l is not a screening means and does not function as a screen for sand, etc.

cylinder 25 and a vertically reciprocating piston rod or member 28, connecting the piston 21 andV head 2l in any approved way, and extending between two of the rollers l l.

The piston 2T may be actuated by oscillations of Valve 29, similar to the valve shown in Figure 4, which has a pipe 3B leading to a source of fluid under pressure, a pipe 3l leading from the Valve 2d to the lower portion of the chamber 32 of the cylinder 25, and a pipe 33, leading from the valve 29 to the upper portion of the chamber 32. There is also provided an exhaust port 34 for the valve 29. By manipulation of valve 29, the grating-carrying head 2l may be caused to rise quickly and a single blow upon the grizzly l1 may be suilicient to cause a mold 4B in a ask portion 4l (the drag portion of a flask is shownby way of example) inverted upon the `grille I1, to collapse and break up into small pieces. Several strokes of the ypiston 21, carrying the grille-like head 2l upwardly against the under side of the grizzly I'l, may be necessary in order to break out all of the mold 4l) and shake the flask portion 4| free of sand, etc. The vibrating means 20 is adapted to raise the grizzly I'I and head 2I above the uppermost surfaces of the rollers II, as in Figure 3, and to lower the grizzly II to the upper surfaces of the rollers I I and the head to its normal position, as in Figures 1 and 2.

Directly below the shake-out station may -be a sand reconditioning and retempering apparatus 6I).

The flask portions, suoli as III, may be moved to and deposited upon the grizzly or grille I'I, by a suitable crane 10, including a grapple or bail 'II provided with a horizontal beam 'I2 carrying eyes 13, as by pins 74, adjacent` its ends '15, for engagement with the trunnions of flask portions. There may be, also, a central eye 1G, carried by a sling 'I1 supporting the grapple il, which eye 'I6 may be engaged by the crane hook 18.

This shake-out station imparts a vertical movement to the grizzly and, of course, the iiask section; a jar when the head 2I contacts the grizzly or grille Il, and a second jar when the grizzly contacts the rollers II, upon descent of the head 2I. There is no rotative movement of the grizzly during the shake-out which movement would be apt to fling sand about, but jarring of the flask section is found to dislodge the mold and sand from the iiask section so that the material will drop straight downwardly.

I claim:

l. In a shake-out station of a foundry plant, a roller bed including a plurality of freely rotatable, spaced-apart, like rollers, having their axes parallel; a horizontally-disposed grille extending about the upper portions of said rollers and normally below the uppermost surfaces thereof; and means mainly below said roller bed for moving said grille upwardly to a plane with the upper face of said grille above the uppermost surfaces of said rollers and downwardly to the normal position of said grille.

2. In a shake-out station of a foundry plant,

`a roller bed including a plurality of freely rotatable, spaced-apart, like rollers, having their axes parallel; a horizontally-disposed grille extending about the upper portions of said rollers and normally below the uppermost surfaces thereof; including a pair of paralleling bare disposed normal to the axes of said rollers, and rods connecting said bars and normally `disposed between adjacent rollers, with their longitudinal axes parallel'mg the axes of said rollers, and means mainly below said roller bed for moving said grille upwardly to a plane with the upper face of said grille above the uppermost surfaces of said rollers and downwardly to the normal position of said grille.

3. In a shake-out station of a foundry plant, a roller bed including a plurality of freely rotatable, spaced-apart, like rollers, having their axes parallel; a horizontally-disposed grille extending about the upper portions of said rollers and normally below the uppermost surfaces thereof; and means mainly below said roller bed for moving said grille upwardly to a plane with the upper face of saidvgrille above the uppermost surfaces of said rollers and downwardly to the normal position of said grille, said means including a hammer provided with a vertically reciprocating member, operatively connected with the under side of said grille and with said member extending upwardly between two of said rollers.

4. In a foundry plant shake-out apparatus, a bed including a plurality of spaced-apart paralleling, like supports, horizontally disposed; a horizontally-disposed grille extending about the upper portions of said supports and normally below the uppermost surfaces thereof, and means, mainly below said bed, for moving said grille upwardly, to a plane with the upper face of said grille above the uppermost Surfaces of said supports, and downwardly to the normal position of said grille.

5. In a foundry plant shake-out station, a roller bed including a plurality of freely rotatable, spaced-apart, like rollers, having their axes parallel; a grizzly upon said rollers; a horizontally-disposed head including bars and rods eX- tending about the upper portions of said rollers, said head being underneath said grizzly and normally out of contact therewith; and means for moving said head upwardly to jar said grizzly, and downwardly to the normal position of said head.

6. In a foundry plant shake-out station, a roller bed including a plurality of freely rotatable, spaced-apart, like rollers, having their axes parallel; a grizzly upon said rollers; a horizontallydisposed head including bars and rods extending about the upper portions of said rollers, said head being underneath said grizzly and normally out of contact therewith; and means for moving said head upwardly to jar said grizzly, and downwardly to the normal position or" said head, said means being disposed mainly below said roller bed.

7. In a foundry plant shake-out station, a roller bed including a plurality of freely rotatable, spaced-apart, like rollers, having their axes parallel; a grizzly upon said rollers; a horizontallydisposed head including bars and rods extending about the upper portions of said rollers, said headk being underneath said grizzly and normally out of contact therewith; and means for moving said head upwardly to jar said grizzly, and downwardly to the normal position of said head, said means being disposed mainly below said roller bed, and including a cylinder, a piston in said cylinder, a vertically reciprocating piston rod connecting the piston and said head and extending between two of said rollers, and actuating means for said piston.

EDWARD H. WHITTAKER. 

